Unity launchers run multiple copies of program if clicked multiple times before the program loads

[Alistair Buxton]

Binary package hint: unity

Normally the Unity launchers will only allow you to open a single copy of a program, eg you can only open one file manager window. Subsequent clicks open the window selection...thing.

But if you click the launcher eg 3 times before nautilus loads, you will get 3 nautilus windows. As soon as the first window opens this stops happening.

To reproduce:

1. Close all nautilus windows
2. Quickly click the nautilus icon lots of times
3. Watch loads of nautilus windows open

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.2.2-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
Uname: Linux 2.6.37-7-generic i686
Architecture: i386
CompizPlugins: No value set for `/apps/compiz/general/allscreens/options/active_plugins'
Date: Mon Dec 6 21:16:40 2010
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
LiveMediaBuild_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
MachineType: LENOVO 20040M18
PciDisplay: 00:02.0 VGA compatible controller [0300]: Intel Corporation N10 Family Integrated Graphics Controller [8086:a011] (prog-if 00 [VGA controller])
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
ProcVersionSignature_: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
RelatedPackageVersions:
 xserver-xorg 1:7.5+6ubuntu3b1
 libgl1-mesa-glx 7.9+repack-1ubuntu2
 libdrm2 2.4.22-2ubuntu1
 xserver-xorg-video-intel 2:2.13.901-2ubuntu1
 xserver-xorg-video-ati 1:6.13.2-1ubuntu2
SourcePackage: unity
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 08/11/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 24CN61WW
dmi.board.name: Caucasus2
dmi.board.vendor: LENOVO
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Lenovo
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
dmi.product.name: 20040M18
dmi.product.version: Lenovo Ideapad S10-3t
dmi.sys.vendor: LENOVO
glxinfo: Error: [Errno 2] No such file or directory
system: distro = Ubuntu, architecture = i686, kernel = 2.6.37-7-generic

[Paul Sladen (sladen)]

Trivially reproducible.

[davidz12 (dvanderzande)]

I don't think this is a bug. It's more a feature.

[Paul Sladen (sladen)]

If it's a feature, then the button should be responding four times (each within 100 milliseconds) to show that it has responded!

[Mark Shuttleworth (sabdfl)]

At a minimum, we need a click-response effect on the launcher.

[Jason Smith (jassmith)]

We no longer respond to multiple clicks. When the startup notification animation is playing, we do not launch new instances.